Dental fulcrum-forceps.



MRTURNER; DENTAL FULCRUM FORCEPS.

APPLICATION FILED N OV. 10| 1914.'

Patented July 20, 1915.

rie.

JOSEPH FRANKLYN TURNER, or DANVILLE, VIRGINJA:

DENTAL IEULCRUM-FORCEPS.

To all whom t may concern v Be it known that I, JOSEPH FRANKLYN TURNER, a citizen of the United. States, re-

siding at Danville7 in the county yof Pittsyl- Vania and State of Virginia, have invented new and useful Improvements in Dental F ulcrum-Forceps, of which the following is a specication.

This invention relates to detachable fulcrum forceps for dental operations and particularly to a cross-bar providing means for ready attachment and detachment of a plurality of forceps of differenttypes.

The improvement comprises vessentially a cross-bar and forceps, the cross-bar having a socket means embodied therewith toreceive a ball connected tothe forceps at a distance from the working extremity of the latter, the ball being held in the socket of the cross-bar by a readily closingv and open-l ing device alsov disposed on the cross-bar.

The improvement embodying the compoj nents just specified is especially intended for operations on impacted or uninterrupted lower ythird molars and a plurality o-f forceps isadapted to be used with the cross-bar sothat one pairk of forceps, for instance, of a proper character may be applied to the cross-bar for vuse in the occlusal surface of the third molarl when abutted against the distal surface of the second molar, or when the third molar, is onlyV partially erupted; or forceps intended for simpler operations or cases may be detachably connected to the cross-bar or an elevator forceps may be asf sociated with the cross-bar for operationen roots. The cross-bar is not limited to the v use therewith of any precise form offorceps,

i but the cross-bar serves as a means for re'- ceiving apart of a fulcrum devicecarried by various forceps t-o permit the latterto be moved in vertical and opposite sidewise directionsto accommodate various operations.

The primary object of theinvention Ais to provide for the concentration of considerable force to lift a tooth from its socket by a v comparatively simple pressure operation in and arrangement of the several parts which specification of :Letters Patent. Patented July 20, 1915; -fllp'plieation filed November 10, 1914. Seria`1No,i871,393.

will be more fully hereinafter described and claimed. l

rIn the drawing: Figure 1- is a perspective view. of: ay cross-bar or rest embodying the features of the invention and showing a lpair of fiat beaked forceps operatively associated therewith. ig. 2 is an enlarged transverse vertical section through the cross-bar or rest and aportion of the forceps shows by Fig. 1 and particularly illustrating the ball and socket joint componentsin assembled relation.v Fig. 3 isa transverse vertical section taken in the planel of the `lineu3.-3,}Fig. 1. Fig. 4. is a detail .perspective view of a portion of a round, .tapering beaked forceps. Fig. 5' is a detail perspective viewof a portion of an elevator forceps embodying a part ofthe features of the invention. Fig. 6 is av top planviewr of the fulcrum supportingrest or cross-bar with .which thel several vforceps may be detachably assembled.v i

The essential feature of the invention consists of a supporting rest orcross-bar adapt-I ed toV be disposedv on the teeth in proper position in any manner found advantageous in pursuing .the operation lto be performed and provided with means for permitting different forms ofl forceps to be detachably y assembled therewith. Thiscross-bar com-` prises two sections or members 5 and 6, preferably of droppforged steel, the section 6 being movablyI mounted on the top section 5 throughthe medium of a fulcrumpin 7 extend-ing therethrough to one end and into the section 5. y TheV section or member 5 has v ends of the sectionor memberf slightly depend below the undert side of the yrubber piece 9, as at 11, to provide terminal guards.`

The section or member 5 near'the pivoted or fulcrumed end of the ysection orfmember 6 is formed with a socket l2 and is lal'so constructed adjacent to vsaid socket with a boss 13 having inner inclined walls 14, the

socket in the section or member 5 being continuedI upwardlyv into` and through the.

center of the boss,as at 15,. `The walls 14: converge toward the continuation of the socket in the boss and form stop walls for the movable section or member 6 which has a recess 16 of the same contour as the inner portion of the boss to permit it to close snugly against the boss, the socket also being continued upwardly through the section or member (i, as at 17, and with the continuation of the socket through the boss forming throat for the socket 12. rlwhe section or member G constitutes a cover or closure as well as a keeper, and adjacent to its free end a slot 1S is formed therein and extends through one side edge to permit the said section or member `6 to freely move over and clear a pin 19 rotatably held in an adjacent portion of the section or member 5 below, the said pin having a hooked or angular head 2O which is adapted to be turned over and bear upon the upper surface of the section G adjacent to the slot 18. lt will therefore be seen that the pin 19 and its head 9.0 form a catch or a lock for holding the section or member 6 in fixed position on the section or member 5. The catch or locking means comprising the pin 19 and head 20 may be readily turned to lock the section or member 6 on the section or member 5 or to release said section 6 as may be desired.

" rThe forceps 21 shown by Figs. 1 and 2 have flat beaks 22 adapted for simple operations, and the forceps 23, shown by Fig. 4, have round tapering beaks 24. rlhe forceps 25, shown by Fig. 5, are of the elevator type and are intended for roots, and are provided with a shank 26 which is gradually'reduced toward and secured to and formed as a part ofl an elevator head 27. All of the forceps shown are preferably embodied in the complement or special equipment comprising the improved supporting rest or cross-bar. It will be understood, however, that other forceps may be employed with the said supporting rest or cross-bar. All of the forceps shown are provided with a ball 28 adapted to be inserted in the socket 12 by first releasing the cover or closure formed by the section or member 6 and then moving the latter into normal position over the top portion of the section or member 5 and securing the said cover or closure against movement as hereinbefore explained. Each of the balls 28 is formed with a neck 29 of sufiicient length to permit the forceps to freely move in different directions on the supporting rest or cross-bar when the several forceps are associated with the said rest or cross-bar. The neck 29 in the forceps shown by Figs. 1, 2 and 4i is continuous with the fulcrum pin 30 of the jaws or beaks and whereby the structure is very much simplified for the reason that by a slight addition to the fulcrum pin or the provision of the neck 29 and ball 28 as a part thereof the necessity of a separate construction of ball and neck is obviated.

From the foregoing it will be seen that either one of the pairs of forceps may be quickly assembled in connection with the supporting rest or cross-bar, and the latter is placed on the molar teeth and the beaks of A the forceps in all directions.

lThe forceps are all to be made of steel except the handles of the elevator forceps, which are preferably formed of hard wood and set in and riveted.

lt will be found that by the use of the improvement as hereinbefore described the operation of extraction in connection with molar teeth and especially impacted or unerupted lower third molars will be exceptionally advantageous and practicable, the operation of extraction by the use of the improvement being materially simplified and possible with a comparatively small amount of applied force and without injury to the remaining teeth or the jaw bones.

It will be understood that changes in the proportions, dimensions and minor details may be resorted to to accommodate various applications and uses without departing from the spirit of the invention.

What is claimed is:

1. The combination with forceps having a projection with a ball, of a supporting rest having a socket to receive said ball, and a movable cover member to hold the ball detachably assembled with the rest.

2. The combination with forceps having a ball fixed thereto, of a supporting rest having a socket to detachably receive and hold the ball and forceps in movable connected relation to the rest.

3. The combination with forceps having a ball fixed thereto, of a supporting rest comprising a socket member to receive the ball, and a second member movably mounted on the socket member to hold the ball and forceps in movable connected relation to the rest, the socket member being provided with locking means to engage the movably mounted second member.

4f. lThe combination with forceps having a ball fixed thereto, of a supporting rest comprising a socket member to receive and hold said ball and having a lower rubber strip, located above the lower portions of the opposite extremities ofthe said socket member and provided with side fianges embracing the opposite sides of the said member, and a second member movably mounted on the socket member to hold the ball and forceps in movable connected relation to the rest,

the socket member being provided With locking means to engage the movably mounted second member.

5. A supporting rest adapted to be disposed and rest on the teeth and comprising a socket member and an upper laterally movable e retaining member mounted on the socket member, and forceps having a ball held thereby at a distance from the Working extremity thereof to detachably fit into the socket member, the retaining member having means to close over the ball of the forceps to hold the said ball and the forceps in movable connected relation to the rest. t

In testimony whereof I have hereunto set 15 my hand in presence of tWo subscribing Witnesses.

JOSEPH FRANKLYN TURNER.`

Witnesses:

J. A. COVINGTON, S. A. SHADRACH.

Qopes of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents Washington, D. C. 

